Why does the official account of Changtong code WeChat click in, and the light is very dark?

The highlight of health code is the setting of software, and it is generally impossible to adjust the setting.

Apps such as Alipay and WeChat will also be highlighted when the payment code is opened, which will generally force the highest brightness, especially when the system brightness is low, which will form a strong contrast.

The reason for this setting is to improve the visibility of information such as two-dimensional code or bar code of one's own equipment, facilitate the identification and scanning of the other equipment, and improve the accuracy of equipment identification information.